package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

/**
 * @author 32338
 * @date 2024-04-12 16:18:31
 * @description
 */
@Service
@Slf4j
public class DishServiceImpl implements DishService {

    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;

    /**
     * @description
     ***:新增菜品
     **/
    @Transactional
    @ApiOperation("新增菜品")
    public void save(DishDTO dishDTO) {
        //插入一条菜品信息
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);

        dishMapper.insert(dish);
        Long dishId = dish.getId();

        List<DishFlavor> flavors = dishDTO.getFlavors();

        //插入多条口味信息
        if (flavors != null &&flavors.size() >0){
            flavors.forEach(flavor->{
                flavor.setDishId(dishId);
            });
            dishFlavorMapper.insertBatch(flavors);
        }
    }

    /**
     * @description
     ***:分页查询菜品
     **/
    @ApiOperation("分页查询菜品")
    public PageResult pageQuiry(DishPageQueryDTO dishPageQueryDTO) {

        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());

        Page<DishVO> page = dishMapper.pageQuiry(dishPageQueryDTO);

        return new PageResult(page.getTotal(),page.getResult());
    }

    /**
     * @description
     ***:根据Ids批量删除菜品
     **/
    @ApiOperation("根据Ids批量删除菜品")
    public void deleteByIds(List<Long> ids) {
        //起售中的菜品不能被删除
        for (Long id : ids) {
           Dish dish= dishMapper.getById(id);
           if (dish.getStatus() == StatusConstant.ENABLE){
               throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
           }
        }

        //被套餐关联的菜品不能被删除
        List<Long> setmealIds = setmealDishMapper.getSetmealIdsByDishIds(ids);
        if (setmealIds!=null && setmealIds.size()>0){
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }

        //同时删除一个或者多个菜品，口味也必须删除
        for (Long id : ids) {
            dishMapper.deleteById(id);
            dishFlavorMapper.deleteByDishId(id);
        }
    }

    /**
     * @description
     ***:根据id来查询菜品和对应的口味数据
     **/
    @ApiOperation("根据id来查询菜品和对应的口味数据")
    public DishVO getDishWithFlavorById(Long id) {
        //根据id来查询菜品
        Dish dish = dishMapper.getById(id);

        //根据id来查询口味信息
       List<DishFlavor> flavors = dishFlavorMapper.getFlavorById(id);

       //返回VO
        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(flavors);

        return dishVO;
    }

    /**
     * @description
     ***:修改菜品
     **/
    @ApiOperation("修改菜品")
    public void updateWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        //修改菜品
        dishMapper.update(dish);

        //删除口味
        dishFlavorMapper.deleteByDishId(dishDTO.getId());

        //插入多条口味信息
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors != null &&flavors.size() >0){
            flavors.forEach(flavor->{
                flavor.setDishId(dishDTO.getId());
            });
            dishFlavorMapper.insertBatch(flavors);
        }
    }

    /**
     * @description
     ***:起售停售菜品
     **/
    @ApiOperation("起售停售菜品")
    public void statusOrStop(Integer status, Long id) {
        Dish dish = Dish.builder()
                .status(status)
                .id(id)
                .build();

        dishMapper.update(dish);
    }

    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getFlavorById(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }

    /**
     * @description
     ***:根据分类id查询菜品
     **/
    public List<Dish> list(Long categoryId) {
        Dish dish = Dish.builder()
                .categoryId(categoryId)
                .status(StatusConstant.ENABLE)
                .build();
        return dishMapper.list(dish);
    }
}
